Mar 16, 2009 · Select random sampling from sqlserver quickly Asked 16 years, 10 months ago Modified 13 years, 1 month ago Viewed 31k times

Mar 30, 2014 · I want to know the use of random.sample() method and what does it give? When should it be used and some example usage.

Apr 9, 2009 · 77 This question asks about getting a random (ish) sample of records on SQL Server and the answer was to use TABLESAMPLE. Is there an equivalent in Oracle 10? If there isn't, is there a …

I just discovered that the RAND() function, while undocumented, works in BigQuery. I was able to generate a (seemingly) random sample of 10 words from the Shakespeare dataset using: SELECT …

Apr 3, 2014 · Using random.sample(xrange(1, 100), 3) - with xrange instead of range - speeds the code a lot, particularly if you have a big range, since it will only generate on-demand the required 3 …

Aug 13, 2012 · What is a clean way of taking a random sample, without replacement from an array in javascript? So suppose there is an array x = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] and I want to …

Nov 24, 2010 · I wrote a solution for drawing random samples from a custom continuous distribution. I needed this for a similar use-case to yours (i.e. generating random dates with a given probability …

23 You need to use Inverse transform sampling method to get random values distributed according to a law you want. Using this method you can just apply inverted function to random numbers having …

Here is an updated dplyr version for stratified sampling when you need different numbers of samples from each group (i.e. 1:5 ratio or something in my case, but you can specify the n for each group …

Mar 18, 2014 · This method will make a different random selection from each column in each group, rather than selecting the entire row in each group. The answer from @ihadanny will select entire …